Inverted hydrocarbon-lamp.



J. P. LAWRENCE. IHYERTED HYDROGARBON LAMP. LPPLIOATION FILED AUG. 30, 1911.

1,074,1 3,,v Patentd Sept. 30, 1913 lill A I JAY nt-awnnnen, or CHICAGO, ILLINOIS.

. Specification of l Iietters Patent.

Patented Sept. 30, 1913:

apprise-tan fiiednagast 3011911. Serial No. 646,801.

To all whom it ma conccrni, V j I Be it known that I, JAY F. LAWRENCE, a citizen of the United..States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and. useful Improvements in Inverted Hydrocarbon-Lamps; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, and to the numbers of reference marked thereon, whichform a part of this specification. v This invention relatesto improvements in inverted hydro-carbon lamps of that class in which the supplyofhydro-carbon is received from below'the burners. v

It is an object of the invention to afford a constructionadapted for us'e as a. portable or table lamp, and in which the hydro-carbon fluid is forced to the burners from a suitable containing and pressure chamber.

It is also an object of the invention to afford a lamp of the class described in which the supply of hydro-carbon is maintained at constant flow at the burners at all times, and in which a regulating valve is provided remcte=- from the heat of the burner, and whereby the quantity of hydro carbon consumed may be regulated as clesired.

The invention also has for its object the construction of an improved and novel inverted burner for lamps.

A preferred form of the invention consists in the matters hereinafter more fully described.

In the drawings: Figure 1 is a view in elevation with the shade indicated in dotted lines. Fig. 2 is an enlarged vertical section of the regulating valve. Fig. 3 is an enlarged section taken through the burners and mixing chamber. Fig. 4: is a section on line 4:4: of Fig. 3. Fig. 5- is a top plan view of the reservoir and pressure chamber.

As shown in the drawings: 1, indicates a reservoir for gasolene (or other hydrocarbon), provided in its top with an air valve 2, adapted for connection with an air pressure pump such as a bicycle pump, to compress the air in the top of said'pressure chamber, and a threaded inlet for admitting the hydro-carbon therein, and closed by the threaded plug 24:. Threaded into the top of said chamber is a valve casat'the middle of said casing, is directed substantially radially from the axi toward an externally andinter'nally threaded projection 5. A needle valve stem 6, is threaded the bor of said projection and at its inner end 1's adapted to close the radial portion of said passage inorder to permit the desired-degree of opening therefrom to regulate the passage of hydro-carbon through the valve. A handwheel 7, is provided on the outer end of the valve stem, and a gland 8 is provided around said stem toprevent leakage of the hydro-carbon fluid. A pipe 9, extends downwardly from i the lower end of said casing continuous with the bore therethrough to near the bottom of said tank of reservoir.

Threaded on the upper end of the casing 3, is a tube 10, in the upper end of which is threaded a pipe 11, having a relativelysmall b'ore therethrough, and threaded on the upper end of the pipe 11, is the combined "mixing. head and burner. This, as shown,

' ing 3, having a passage t-herethrough, which back into the casing causing back firing.

As shown, the lower end of each of said burner pipes is turned peripherally to reduce the same slightly in size to afford support for an incandescent'mantle 14c, engaging thereon. The mixing chamber 15, extends horizontally on each side of the burner, and is cored to a relatively large diameter and communicates at its middle with the pipe or bore in the burner arms, and is open at one end and closed at the other. Said mixing head is bored to afiord a passage 16, communicating with the passage in the pipe 11. Said passage 16 opens in the end of the mixing head and screwed therein is an angular tubular fitting 17 which has a transverse passage in the upper extension thereof which communicates with an intermediate passage 18, as shown in Fig. 4, and is coaxial with the mixing chamber. Threaded into the upper end of said extension, is the nozzle 19, arranged to direct a jet into the mixing chamber at its axis. As shown, an adjusting screw 20, is provided in said'transverse passage and by rotation,

is adapted to restrict, or vary the siz' 'ofthe" passage leading to the ct.

Mounted on the top of the mixing chamber, is a bracket or cross arm 21, provided with one or more set screws 22, adapted to engage and support a shade 23, inclosing or partly inclosing the burners. r

The operation is as follows: The lamp having been properly connected with its tank and the pump, air under pressure is supplied to the tank through the air valve 2, sufficient to force the gasolene upwardly through the valve 8, and connected pipes, to the passage 16, leading through the generator head, and thence through the nozzle 19, into the mixing chamber 15. The discharge through the needle valve, of course, may be regulated by said valve to suit the require ments at the burners, and full regulation may be afforded by the inward or outward adj ustment of the adjusting screw 20, shown in Fig. 4. The hydro-carbon delivered through said nozzle, is directed in a jet inwardly in the mixing chamber at approximately its axis, and carries inwardly therewith a sufficient quantity of air to afford a mixture of the right qualities. The mixture thus passed into the mixing chamber, passes downwardly. at each side of saidchamber through the burners and through the screens 13 ready for ignition. The combustion in the mantles is, of course, as is usual where mantles are used. A strong white light is produced, which may be regulated at will by the operator by means of'the needle'valve or adjusting screw 20, and, of course will also be adjusted'or varied with the di erent pressures in the tank.

Of course, details of the invention may be varied without departing from the principles of this invention.

I claim as my invention:

..1. In a device of the class described a horizontally disposed casing,

a mixing e chamber therein, burner arms depending downwardly on each side of said casing and integral therew th, and a vaporlzlng'passage in said casing beneath said mixing chamber between said passages, and a pair of burners integral with the said casing and depending below the same in a plane perpendicular to the axis thereof.

In testimony whereof I have hereunto subscribed my name in the presence of two I subscribing witnesses.

JAY F. LAWRENCE. Witnesses:

LAWRENCE REIBsTEIN, GEORGE R. Moore.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner ofPatents, Washington, D. G. 

